IV infusion therapy in St. Louis, in a chair instead of a hospital bed

An infusion is a simple idea. The drug goes straight into a vein, at a set rate, while someone watches you. What goes wrong is everything around it. The order sits in a fax tray. The hospital outpatient department has no chair until next week. The patient who needed antibiotics today is still waiting on Thursday, or is kept in a hospital bed for days because nobody arranged a place to give the drug outside.

Infusion Center US exists to take that friction out. It is a scheduled outpatient infusion service inside Express Urgent Care, St. Louis, next to the airport. You come in, a nurse places the IV, the infusion runs while you sit in a recliner, and you go home the same day.

Not sure this is your service? Tap the directory assistant (the light in the corner of the page) and it will point you to the right place. This page sits in our pain and metabolic medicine directory.

Which IV infusions does Infusion Center US give?

Five kinds, and only these five:

• IV antibiotics. Scheduled doses for infections that need intravenous treatment, given in a chair instead of a hospital bed.
• IV hydration and nutrient infusions. Fluids and electrolytes for dehydration, and nutrient infusions a physician orders for a reason.
• Biologic infusions for rheumatologic conditions. Infused biologics on the schedule your rheumatologist sets.
• IV ketamine. For refractory nerve pain such as RSD/CRPS, with monitoring throughout.
• Infusions your specialist ordered. Your doctor writes the order; the center gives the infusion and sends the record back.

No chemotherapy. If your oncologist has ordered a cancer infusion, it belongs with an oncology infusion team.

When do IV antibiotics replace pills?

Hospitals keep people for days for one reason surprisingly often: the antibiotic has to go in a vein, and nobody arranged a place to give it outside. The bed costs more than the drug, the patient sleeps badly, and every day inside carries its own infection risk. Outpatient IV antibiotics break that loop.

IV antibiotics are needed when:

• The bacteria are resistant to every antibiotic that works by mouth.
• The infection sits where oral drugs reach poorly, such as bone or a deep soft-tissue infection.
• Oral antibiotics were tried and the infection kept spreading.
• You are finishing a course that started in the hospital or the emergency department.

Your treating doctor makes that call and writes the order: the drug, the dose, how often and for how long. The center gives it as written. Short courses usually use a fresh IV at each visit. Courses lasting weeks usually run through a PICC line placed by your doctor or the hospital, which the nurses flush and care for at each visit. Most doses take under an hour. If your antibiotic needs blood levels or kidney checks during the course, they are drawn on site.

Between doses, call about redness, swelling or drainage at the line, new fever or chills, a rash or hives, or watery diarrhea. Trouble breathing or swelling of the lips or throat is a 911 call.

Is IV hydration the same as an IV bar drip?

No. There is a whole industry of IV bars selling a drip as a lifestyle. That is not this. Fluid in a vein is a drug. It changes your blood pressure, your sodium and your kidneys' workload, and the right bag for one person is the wrong bag for the next. Here it is ordered for a reason, by someone who checks you first.

IV hydration makes sense when vomiting or diarrhea will not let you keep fluids down, when dehydration from a stomach bug, heat or a long illness outruns what you can drink, or when you are lightheaded on standing because your fluid volume is low. If you can drink and keep it down, drinking works. The IV is for when it does not.

Nutrient infusions deliver vitamins or minerals straight into the blood. They make sense when a measured deficiency exists and the gut cannot absorb enough, or when a level has to be corrected faster than pills can manage. They are given on a physician's order, after the team knows what is being replaced and why. There is no drip menu.

Heart failure, advanced kidney disease and an already abnormal sodium or potassium all call for a closer look before any bag is hung. That is why vital signs and history come first and a physician sets the order.

How do biologic infusions for rheumatoid arthritis work here?

A biologic is a drug made from living cells that targets one piece of the immune attack, such as a single inflammatory signal. Many are given by IV on a fixed schedule, every few weeks or months. Miss the schedule and the inflammation comes back, so the practical problem is often not the drug. It is getting a chair on the right week.

Biologic infusions here cover rheumatoid arthritis, psoriatic arthritis, ankylosing spondylitis, lupus and other autoimmune conditions your rheumatologist treats with an infused biologic. The diagnosis and the choice of drug belong to your rheumatologist. The center gives what is ordered.

• Before the first dose: the order and prior authorization are confirmed. Most biologics need screening tests, such as a tuberculosis test, which your rheumatologist orders.
• Premedication: some orders include an antihistamine, acetaminophen or a steroid before the infusion to lower the chance of a reaction.
• The infusion: often one to several hours, with vital signs before, during and after. First doses carry a longer watch period.

Infusion reactions show up as flushing, itching, chills, headache, or a drop or spike in blood pressure, usually during the drip. Slowing or pausing it handles most of them. These drugs dampen the immune system, so a fever or new infection before your next dose means a call first; the dose may need to wait.

Can my specialist's infusion order be given here?

Yes. Your specialist writes the order, the center gives the infusion in an outpatient chair, and the record goes back to your specialist. Doctors and their staff send referrals directly. Coverage and the order are checked before the first appointment. Many infusions, biologics in particular, need prior authorization from your plan, and an approval is not a promise of payment; your plan still decides each claim.

Who directs the infusion care?

Dr. Gurpreet Singh Padda, MD, MBA, MHP. Infusion is anesthesia work before it is anything else: venous access, drug dosing by rate and weight, and watching blood pressure, heart rate and oxygen while the line runs. His training is anesthesia first.

• Anesthesia residencies at Illinois Masonic and Washington University / Barnes, with pediatric anesthesia, Chief Resident 1991 to 1992
• Diplomate of the American Board of Anesthesiology, the American Board of Pain Medicine and the American Board of Interventional Pain Management
• Assistant Professor of Anesthesiology, 1992 to 1999, and Director of the Pediatric Acute Pain Management Service, 1995 to 1999, where he built a multidisciplinary acute pain team
• Chairman of two hospital departments of anesthesia, perioperative medicine and pain management, and regional director of anesthesiology
• Diplomate of the American Board of Addiction Medicine, which matters when the drug on the pump is a controlled substance

Ketamine is an anesthetic. Screening, dosing and monitoring it is the job he trained for.

When is IV ketamine used for nerve pain?

The clearest case is refractory nerve pain, most often reflex sympathetic dystrophy (RSD), also called complex regional pain syndrome (CRPS).

Why ketamine?

Ketamine blocks the NMDA receptor. In RSD, CRPS and other refractory nerve pain, repeated pain signaling drives glutamate onto NMDA receptors in the spinal cord. The response amplifies over time. That amplification is the leading explanation for why light touch starts to feel like injury. Block the receptor and you turn down the amplifier rather than numbing the wire.

Who is a candidate?

• RSD or CRPS meeting the Budapest clinical criteria, or documented neuropathic pain with allodynia
• An inadequate response to standard care: membrane-stabilizing medication, sympathetic blocks, desensitization and physical therapy
• No medical condition that makes ketamine unsafe

Ketamine is not a first step. It is not a substitute for finishing the diagnosis. If other treatable causes have not been excluded, that comes first.

Why is IV not the usual route?

Dr. Padda's practice has moved to sublingual or intranasal ketamine for nearly all patients, because those routes are better tolerated and less risky. An infusion means hours in a chair, a driver home and more dissociation; under the tongue and through the nose avoid most of that. A compounded topical cream is also used for CRPS skin pain. Those routes are prescribed through the Padda Institute. IV infusion stays available at Infusion Center US for the patients it suits, and it is chosen less often.

What does the evidence show for each route?

The evidence does not transfer between routes. If someone quotes an infusion trial while handing you a jar of cream, those two things have little to do with each other.

• Intravenous. The strongest data come from a randomized, double-blind trial of 60 patients with CRPS type 1. A 100-hour continuous inpatient infusion lowered pain against placebo through roughly week 11 and lost separation by week 12. Two limits rarely get quoted: function did not improve, only pain scores, and psychomimetic side effects hit 76% of patients. Short outpatient infusions are not what that trial studied.
• Topical. In a controlled crossover trial of 20 CRPS patients, 10% ketamine cream reduced brush-evoked pain and pinprick hypersensitivity, with blood levels undetectable. The effect was local, measurable the same day, and its duration was never measured.
• Sublingual and intranasal. There is no controlled efficacy evidence in these conditions. They are used because they are practical and better tolerated than an infusion.

Because the IV trial improved pain but not function, ketamine runs alongside desensitization and physical therapy, never in place of them. Duration is route-specific and the honest numbers are thin. That is the reason the plan is built on your response, not on a promise.

What happens during an IV ketamine infusion?

Screening before. Monitoring throughout: blood pressure, pulse and oxygen saturation. Plan for several hours including recovery. No driving afterward; someone takes you home.

Expect dissociation, vivid dreams, confusion and sedation, plus nausea and rises in blood pressure and heart rate. Repeated or prolonged exposure can cause ulcerative cystitis, a painful bladder condition that is sometimes irreversible, and liver and bile duct injury. Ketamine is a Schedule III controlled substance with a risk of misuse and dependence.

It is generally avoided in uncontrolled high blood pressure, unstable heart or cerebrovascular disease, raised pressure inside the skull or eye, psychosis, significant liver disease, pregnancy and active substance use.

What do the specialty societies say?

Consensus guidance from the American Society of Regional Anesthesia and Pain Medicine, the American Academy of Pain Medicine and the American Society of Anesthesiologists says the evidence varies by condition and dose, that most studies are small and uncontrolled, and sets monitoring standards for intravenous use only.

For drug-free options, see non-opioid pain treatment; for the practice's approach to opioids, see opioid stewardship. A migraine that will not break is a different service: the headache and migraine treatment page covers it.

What happens on infusion day?

You check in, a nurse places the IV, and the infusion runs while you sit in a recliner. Short infusions take under an hour; some biologics and ketamine run several hours. Bring something to read, wear a top with sleeves that push up, and eat normally unless you are told otherwise. You can get up to use the bathroom: the bag hangs on a rolling pole that goes with you, or the nurse pauses the pump. After most infusions you can drive home. After ketamine, you cannot.

This is a scheduled outpatient infusion service, not an emergency department. Chest pain, trouble breathing, fainting, a rapidly spreading infection with fever and confusion, or swelling of the lips or throat: call 911.

How do you schedule an infusion?

By phone or text. Staff book every infusion directly; there is no online calendar for it.

1. Call (314) 886-5290 or text (314) 886-5902.
2. Say who referred you and what insurance you carry. If your doctor already sent an order, staff match it to your call.
3. Coverage and the order are checked before the first appointment, then you get a time.
4. Doctors and their staff send referrals directly with the order, recent notes and any prior authorization.

Infusion Center US is inside Express Urgent Care at 4479 Woodson Rd, Suite 290, St. Louis, MO 63134, next to the airport, open Monday through Friday, 7 AM to 7 PM. For the walk-in clinic around it, see urgent care in St. Louis.

Frequently asked questions

When do you need an IV infusion instead of pills?

When the drug only comes in IV form, when your gut cannot absorb enough of it, or when the dose has to reach the blood fast and reliably. Many antibiotics and most infused biologics fall in the first group.

Does Infusion Center US give chemotherapy?

No. It gives IV antibiotics, IV hydration and nutrient infusions, biologic infusions for rheumatologic conditions, IV ketamine and specialist-ordered infusions. Cancer infusions belong with an oncology infusion team.

Do you need a referral for an infusion?

Most infusions need a physician order, and biologics always do. Call either way: staff tell you what your infusion needs and can contact your doctor for the order.

Do you have to stay in the hospital for an IV drip?

No. Scheduled infusions run in an outpatient chair and you go home the same day. Hospital admission is for people too sick to be at home, which is a different decision.

Is IV ketamine where CRPS treatment starts?

Usually not. For nearly all patients the practice starts with sublingual or intranasal ketamine, which is better tolerated and less risky. IV infusion is available when it fits.

How long does ketamine relief last?

It depends on the route. Roughly eleven weeks after the multi-day inpatient infusion that was studied, same-day for the cream, and unmeasured for sublingual and intranasal.

Can I drive home after an infusion?

After most infusions, yes. After ketamine, no: someone must drive you. Some premedications cause drowsiness, and you are told when you schedule.

How do I book an infusion?

Call (314) 886-5290 or text (314) 886-5902. Staff book every infusion by phone; there is no online booking.